145731016 has 16 divisors (see below), whose sum is σ = 273384540. Its totient is φ = 72828480.

The previous prime is 145730993. The next prime is 145731017. The reversal of 145731016 is 610137541.

It can be written as a sum of positive squares in 2 ways, for example, as 122014116 + 23716900 = 11046^2 + 4870^2 .

It is not an unprimeable number, because it can be changed into a prime (145731017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19486 + ... + 25906.

Almost surely, 2^145731016 is an apocalyptic number.

It is an amenable number.

145731016 is a deficient number, since it is larger than the sum of its proper divisors (127653524).

145731016 is a wasteful number, since it uses less digits than its factorization.

145731016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264 (or 9260 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 145731016 is about 12071.9102051001. The cubic root of 145731016 is about 526.2401713719.

Adding to 145731016 its reverse (610137541), we get a palindrome (755868557).

The spelling of 145731016 in words is "one hundred forty-five million, seven hundred thirty-one thousand, sixteen".